Free Construction Calculators
Instant material estimates for concrete, roofing, flooring, paint, and more. Built for contractors, estimators, and serious DIYers. No signup. No ads before results.
Why CalcBlueprint?
Every calculator on this site gives you a real number — not a range, not a "contact us for a quote." Enter your measurements, get your materials. That's it.
We use industry-standard formulas from ACI, NRCA, and manufacturer specs. Results are estimates for planning. For complex projects, verify with a licensed contractor or engineer.
Concrete Calculators
Concrete Slab Cost Calculator
Estimate concrete volume and total cost for slabs, patios, and driveways.
Rebar Spacing Calculator
Calculate rebar grid spacing and total linear feet for slabs and footings.
Concrete Footing Calculator
Calculate cubic yards of concrete needed for footings and foundations based on width, depth, and total length.
Roofing Calculators
Roof Pitch Calculator
Convert between pitch, angle, and slope. Includes rafter length.
Shingle Calculator
Calculate bundles of shingles needed for your roof area and pitch.
Flooring & Paint
Tile Calculator
Calculate tiles, thinset, and grout for any floor or wall area.
Paint Calculator
Estimate gallons of paint for walls, ceilings, and trim.
Concrete Column Calculator
Calculate concrete volume for round or square columns. Enter diameter and height to get cubic yards and bag count.
Gravel Calculator
Calculate how much gravel you need for driveways, walkways, and landscaping. Enter area and depth for instant tons and cubic yards.
Asphalt Calculator
Calculate tons of asphalt needed for driveways and parking lots. Enter area and thickness for accurate material estimates.
Board Foot Calculator
Calculate board feet for lumber purchases. Enter thickness, width, length, and quantity to get total board feet and cost.